/* bratuta.net — one stylesheet, no external fonts, no inline styles (CSP: style-src 'self'). */
:root {
  --bg: #fbfbf9;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #4b5260;
  --line: #e2e4e8;
  --accent: #0b6e4f;
  --accent-text: #ffffff;
  --tag-bg: #e7f3ee;
  --tag-text: #0b5a41;
  --radius: 12px;
  --max: 64rem;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --surface: #181b21;
    --text: #eceef2;
    --muted: #a8afbd;
    --line: #2a2f38;
    --accent: #4cc497;
    --accent-text: #0b1a14;
    --tag-bg: #16302a;
    --tag-text: #8fe0c0;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1.0625rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: var(--accent-text); padding: 0.5rem 1rem; z-index: 10;
}
.skip:focus { left: 1rem; top: 1rem; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1rem; }

/* header */
.site-head { border-bottom: 1px solid var(--line); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 3.5rem; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
.site-head nav ul { list-style: none; display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; margin: 0; padding: 0; font-size: 0.95rem; }
.site-head nav a { color: var(--muted); text-decoration: none; }
.site-head nav a:hover, .site-head nav a[aria-current] { color: var(--text); text-decoration: underline; }

/* hero */
.hero { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center; padding: 3rem 0 2rem; }
.hero h1 { font-size: clamp(1.9rem, 4.5vw, 2.8rem); line-height: 1.15; margin: 0 0 0.75rem; letter-spacing: -0.01em; }
.hero .lead { font-size: 1.15rem; color: var(--muted); margin: 0 0 1.25rem; max-width: 40rem; }
.portrait { width: 160px; height: 160px; border-radius: 50%; border: 1px solid var(--line); }
@media (max-width: 640px) {
  .hero { grid-template-columns: 1fr; padding-top: 2rem; }
  .portrait { width: 112px; height: 112px; order: -1; }
}

.button {
  display: inline-block; background: var(--accent); color: var(--accent-text);
  padding: 0.7rem 1.2rem; border-radius: 999px; font-weight: 600; text-decoration: none;
}
.button:hover { filter: brightness(1.08); }
.meta { color: var(--muted); font-size: 0.95rem; margin: 0.75rem 0 0; }

/* sections */
section { padding: 2rem 0; border-top: 1px solid var(--line); }
h2 { font-size: 1.6rem; line-height: 1.25; margin: 0 0 1rem; }
h3 { font-size: 1.15rem; line-height: 1.3; margin: 0 0 0.4rem; }
.intro { color: var(--muted); max-width: 46rem; margin-top: 0; }

.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.2rem; }
.card p { margin: 0.4rem 0 0; }
.card .note { color: var(--muted); font-size: 0.95rem; }

.tag {
  display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  background: var(--tag-bg); color: var(--tag-text); padding: 0.15rem 0.55rem; border-radius: 999px; margin-bottom: 0.5rem;
}

/* demos */
.demo { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 1.5rem; align-items: start; margin: 0 0 2.25rem; }
.demo:last-child { margin-bottom: 0; }
@media (max-width: 800px) { .demo { grid-template-columns: 1fr; } }
.demo figure { margin: 0; }
.demo figure img { border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.demo figcaption { color: var(--muted); font-size: 0.9rem; margin-top: 0.4rem; }
.demo ul { padding-left: 1.2rem; margin: 0.5rem 0; }
.demo li { margin: 0.2rem 0; }
.more { font-size: 0.95rem; }

ol.steps { padding-left: 1.3rem; max-width: 46rem; }
ol.steps li { margin: 0.45rem 0; }

/* prose pages (privacy, 404) */
.prose { max-width: 46rem; padding: 2rem 0 3rem; }
.prose h1 { font-size: clamp(1.7rem, 4vw, 2.3rem); line-height: 1.2; margin: 0 0 0.5rem; }
.prose h2 { font-size: 1.25rem; margin: 2rem 0 0.5rem; }
.prose table { border-collapse: collapse; width: 100%; font-size: 0.95rem; margin: 0.75rem 0; }
.prose th, .prose td { border: 1px solid var(--line); padding: 0.5rem 0.6rem; text-align: left; vertical-align: top; }
.prose th { background: var(--surface); }
.table-scroll { overflow-x: auto; }
address { font-style: normal; }

/* footer */
.site-foot { border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; padding: 1.5rem 0 2.5rem; }
.site-foot p { margin: 0.3rem 0; }
.site-foot a { color: var(--muted); }

@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
@media print { .site-head nav, .skip, .button { display: none; } a { color: inherit; } }